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Finding the Fourth Proportional to 46,458.40, 69,860.40 and 38,855.20

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Solution

The fourth proportional to 46,458.40, 69,860.40 and 38,855.20 is: 58,427.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,458.40 : 69,860.40 = 38,855.20 : x
  2. Step 2: Convert to fraction form
    46,458.40/69,860.40 = 38,855.20/x
  3. Step 3: Cross multiply
    46,458.40x = 69,860.40 × 38,855.20
  4. Step 4: Simplify right side
    46,458.40x = 2,714,439,814.08
  5. Step 5: Solve for x
    x = 2,714,439,814.08/46,458.40
  6. Step 6: Final answer
    x = 58,427.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.